package com.zrb.mobile.chipsedittextlib;

import android.text.SpannableString;
import android.text.Spanned;
import android.text.TextUtils;
import android.widget.MultiAutoCompleteTextView.Tokenizer;
 
public class SemicolonTokenizer implements Tokenizer {
    private char charS;
    private String mSTring;
 
    public SemicolonTokenizer(char charS) {
        this.charS = charS;
        mSTring = String.valueOf(charS);
    }
 
    public int findTokenStart(CharSequence text, int cursor) {
        int i = cursor;
 
        while (i > 0 && text.charAt(i - 1) != charS) {
            i--;
        }
        while (i < cursor && text.charAt(i) == ' ') {
            i++;
        }
 
        return i;
    }
 
    public int findTokenEnd(CharSequence text, int cursor) {
        int i = cursor;
        int len = text.length();
 
        while (i < len) {
            if (text.charAt(i) == charS) {
                return i;
            } else {
                i++;
            }
        }
 
        return len;
    }
 
    public CharSequence terminateToken(CharSequence text) {
        int i = text.length();
 
        while (i > 0 && text.charAt(i - 1) == ' ') {
            i--;
        }
 
        if (i > 0 && text.charAt(i - 1) == charS) {
            return text;
        } else {
            if (text instanceof Spanned) {
                SpannableString sp = new SpannableString(text + mSTring);
                TextUtils.copySpansFrom((Spanned) text, 0, text.length(), Object.class, sp, 0);
                return sp;
            } else {
                return text + mSTring;
            }
        }
    }
}
